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Silesaurus by Dmitry Bogdanov

Silesaurids (Silesauridae) were dinosauromorphs (the group that includes dinosaurs and their close relatives) that lived during the Triassic period. Silesaurids are the sistrer lineage of dinosaurs (Dinosauria). But unlike dinosaurs that became the rulers of the Earth for many millions of years after the Triassic, silesaurids went extinct in the end Triassic extinction that killed of many of the large Triassic animals.

Silesaurus was a silesaurid.